NIRT: Synthesis and Application of Magnetic Nano- and Nano-Composite Particles

磁性纳米颗粒/纳米复合材料(铁磁性、亚铁磁性和反铁磁性材料)在催化、磁冷却、光学和记录设备、酶和其他生物材料的提纯以及水净化设备等方面具有许多潜在的工业和生物医学应用前景；然而，由于其更广泛的规模适用性，仍有一些关键问题需要仔细研究。第一个是为特定应用合成具有特定尺寸、组成和形貌的所需磁性纳米结构的能力；第二个是放大生产大量这些纳米材料的过程；第三个是理解尺寸相关的磁性性质、纳米颗粒在高梯度磁场中的相互作用，以及将这些动态相互作用纳入预测不同介质中的传输特性。该项目的总体目标是：(1)实验室规模合成具有定制尺寸、组成和形貌的磁性颗粒和纳米复合材料；(2)开发高温环境中高浓度纳米颗粒的在线测量系统；(3)展示合成颗粒在数据存储、记录和栓塞剂等生物医学应用中的新应用；(4)解决处理大量此类纳米颗粒的放大问题。这个NIRT团队由圣路易斯华盛顿大学化学工程、机械工程和电气工程系的研究人员组成，他们在纳米颗粒/纳米复合材料合成工艺、纳米颗粒测量和表征以及工业和生物医学应用测试方面拥有专业知识。

PROJECT ABSTRACTCTS-0304649Magnetic nanoparticles/nano-composites (ferromagnetic, ferrimagnetic and antiferromagnetic materials) have many promising industrial and biomedical applications such as catalysis, magnetocooling, optical and recording devices, purification of enzymes and other biological materials, and water purification devices; however, there are key issues that need to be carefully researched for their wider scale applicability. The first is the ability to synthesize desired magnetic nanostructures for specific applications with tailored sizes, compositions and morphologies; the second is to scale up processes for production of larger volumes of these nanomaterials; and the third is the understanding of the size dependent magnetic properties, the interaction of nanoparticles in high gradient magnetic fields, and incorporation of these dynamic interactions in predicting the transport characteristics in different media. The overall objectives of this project are: (1) the laboratory scale synthesis of magnetic particles and nano-composites with tailored size, composition and morphologies; (2) the development of systems for on-line measurement of high concentration nanoparticles in high temperature environments; (3) the demonstration of synthesized particles for novel applications, in data storage, recording, and biomedical applications such as in embolics; (4) addressing issues of scale up for processing large volumes of such nanoparticles.This NIRT team consists of researchers from the Departments of Chemical Engineering, Mechanical Engineering, and Electrical Engineering in Washington University in St. Louis, with expertise in nanoparticle/nano-composite synthesis processes, nanoparticle measurement and characterization, and testing for industrial and biomedical applications.